/* Main Styles for QPaperHub */
:root {
    --primary-color: #4361ee;
    --secondary-color: #7209b7;
    --light-bg: #f8f9fa;
    --dark-bg: #212529;
    --text-muted: #6c757d;
    --border-color: #dee2e6;
}

body {
    font-family: 'Poppins', sans-serif;
}

/* Navbar Styles */
.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color);
}

.nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-color) !important;
    transform: translateY(-2px);
}

/* Hero Section Styles */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 100px 0;
}

.hero-title {
    font-weight: 700;
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-weight: 400;
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.btn-get-started {
    padding: 12px 30px;
    font-weight: 600;
    border-radius: 50px;
    background-color: white;
    color: var(--primary-color);
    border: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.btn-get-started:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    background-color: #f8f9fa;
}

/* Search Section Styles */
.search-section {
    padding: 80px 0;
    background-color: white;
}

.search-card {
    background-color: white;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
    padding: 30px;
    transition: all 0.3s ease;
}

.search-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 35px rgba(0, 0, 0, 0.12);
}

.search-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.search-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* Login Section Styles */
.login-section {
    padding: 80px 0;
    background-color: var(--light-bg);
    min-height: calc(100vh - 76px - 80px); /* Navbar height + footer height */
    display: flex;
    align-items: center;
}

.login-card {
    background-color: white;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
    padding: 40px;
    transition: all 0.3s ease;
}

.login-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 35px rgba(0, 0, 0, 0.12);
}

.login-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* Why Use Us Section Styles */
.why-us-section {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.feature-card {
    background-color: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    padding: 30px;
    height: 100%;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

/* Footer Styles */
.footer {
    background-color: var(--dark-bg);
    color: white;
    padding: 40px 0;
}

.footer a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer a:hover {
    color: white;
    text-decoration: underline;
}

/* Paper Card Styles */
.paper-card {
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.paper-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .search-inputs {
        flex-direction: column;
    }
    
    .search-inputs > div {
        margin-bottom: 15px;
    }
}